Operating Instructions

Table Of Contents
A.4 Maximum Process Temperature Chart
WARNING
Exceeded maximum internal and process temperatures
Danger of device malfunction
Internal temperature must not exceed +80 ° C (+176 °F).
Process temperature must not exceed limits specified by the antenna type.
Note
The chart below is for guidance only.
The chart does not represent every possible process connection arrangement. For
example, it will NOT apply if you are mounting SITRANS LR250 directly on a metallic vessel
surface.
The chart does not take into consideration heating from direct sunlight exposure.
Maximum Process Temperatures versus allowable ambient
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Internal enclosure temperature
Ambient temperature
Process temperature (at process connec‐
tion)
Where the chart does not apply, please use your own judgement regarding the use of SITRANS
LR250.
If the internal temperature exceeds the maximum allowable limit, a sun shield or a longer nozzle
may be required.
See Current Internal Temperature (3.2.1.) to monitor the Internal Temperature.
Appendix A: Technical reference
A.4 Maximum Process Temperature Chart
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 233